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EC number: 447-920-2
CAS number: 897393-42-9
A 21-d Daphnia magna reproduction test with the substance resulted in a
NOEC, LOEC and EC50 of 7.95, 20, and 13.51 mg/L, respectively, based on
the number of live offspring per surviving parent animal (Li et al.,
It is a slight disadvantage that the EC50 lies between the NOEC and the
LOEC, but the results of the test can be considered reliable. Although
some mortality was observed, no concentration response relationship was
obtained; mortality may have been affected by handling stress in some of
the lower test concentrations. The fact that only the reproduction of
the parent animals surviving the complete test were taken into account
avoids any affect of this mortality on the reproduction-based EC50.
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